ClosureFast™ procedure: medical necessity and safety information
The ClosureFast™ radiofrequency ablation procedure is performed as a medical necessity, following diagnosis by a trained vein specialist. It is designed to treat varicose veins and venous reflux, not spider veins or normal veins.
As with any medical treatment, patients should consult their vein specialist and review all safety information before proceeding. Below are some of the potential complications, which are similar to those seen with endovenous laser therapy (EVLA).
Possible complications
Nerve injury
Temporary numbness in small areas of the leg is common in the first week due to local anaesthetic and mild heat absorption by nearby nerves. Sensation usually returns within 2–3 months.
Permanent nerve injury is rare and, if it occurs, typically causes numbness or tingling above the ankle. This is more likely when treatment is performed close to the ankle.
Skin burns
Rare when adequate local anaesthetic is used to fully surround the treated vein, providing a protective buffer.
Phlebitis
Inflammation of the treated vein can occur if residual blood becomes trapped in vein segments. This may appear as a tender, bruised area along the thigh. It usually resolves within weeks with simple measures such as:
- Anti‑inflammatory tablets or topical gels
- Ice or heat packs
- Graduated compression stockings
Tightening sensation
Around 2–3 weeks after treatment, some patients notice a dull ache or tightness along the treated vein. This is due to natural healing and the body’s process of absorbing the sealed vein. The sensation typically fades within a few weeks.
Skin staining
Brown discolouration (hemosiderin staining) is uncommon. In most cases, it fades within 6 months; in rare cases, it may persist up to a year. Very occasionally, laser therapy can be used to help clear residual pigment.
Summary
ClosureFast™ is a safe, effective, and well‑established treatment for varicose veins. While minor side effects can occur, serious complications are rare, and most patients experience rapid recovery with excellent long‑term results.